A: In a recirculating cleanroom the HEPA fan filter units draw air from the plenum, filter it and push it into the cleanroom. The air flows to grills in return air walls that return the air back to the plenum where it can be filtered again. The air never leaves the cleanroom structure. In one pass cleanrooms the HEPA fan filter unit draw air from outside the cleanroom filters it and pushes it into the cleanroom. The air is exhausted outside the cleanroom through grills in the wall.
A: In modular cleanrooms, the cleanroom is prefabricated at the factory and is just assembled on-site. The modular assembly team does walls, roof deck, cleanroom ceiling grid, HEPA fan filter units and lighting installation. In conventional stick built cleanrooms separate trades do each step sequentially taking much longer. Modular cleanroom assembly is cleaner because all cutting and painting has been done in factory.
A: Modular cleanrooms are like LEGO sets. Walls can be easily and cleanly disassembled/and reassembled to modify or expand the cleanroom. In addition, a modular cleanroom can be disassembled and moved to a new location.
A: National laboratories are doing leading edge scientific research that can require extremely tight temperature and humidity control for their cleanrooms. Other special needs can be metal free, extremely quiet, unconventional shapes, and radiation resistance (stainless steel).
A: Softwall cleanrooms are built by suspending clear vinyl walls from aluminum or painted steel frame. Softwall cleanrooms are always one pass design. Hard wall cleanrooms are built using modular or stick built cleanroom walls. They can be one pass or recirculating design. The recirculating design allows cleanroom to have temperature and humidity control.
A: Softwall cleanrooms are always one pass design. The HEPA fan filter unit in ceiling of softwall cleanroom draw air from warehouse, filters the air, and pushes it into the softwall cleanroom. The exhaust air flows under clear vinyl curtains out of the softwall cleanroom.
A: High bay cleanrooms are cleanroom with ceilings 14’ or higher. They have more HEPA fan filter units per square foot due to the larger volume of cleanroom space. They typically incorporate special large roll up doors to allow large equipment to be moved in and out of the cleanroom.
A: The most well know user of high bay cleanrooms is the space industry. They use high bay cleanroom for assembly and testing of space craft and satellites. The aerospace industry and armed forces are also users of high bay cleanrooms for assembly and testing of drones, missiles and aircraft.
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